To provide a cable module that surely makes electrical connection with an auxiliary device, when it is arranged as a movable body inside an auxiliary device of a vehicle.

A cable module 1 is provided with an ECU 3 serving as an auxiliary device, which includes an fitting part 17 and electrical terminal 9. It also includes an FPC 10, connector 11, and adjustment device 26. The FPC 10 includes a conductor line 12 having an exposed contact 12a at one end 10a. The connector 11 includes a box-like housing 21, provided with an inner wall 24 to be engaged by the engaging part 17. The adjustment device 26 has a pressed part 31, provided in the inner wall 24 to push the engagement part 17 against the FPC 10, in a direction of separating from the one end 10a. The adjustment device 26 guides an ECU 3 to contact the terminal 9 with the exposed contact 12a.